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ASTROMETRIC UPDATE:
OCCULTATION BY (105) ARTEMIS - 1999 AUGUST 19

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PATH UPDATED 17 AUGUST 1999

[Prediction by Edwin Goffin]

[Prediction using OCCULT software]

Both the Goffin and OCCULT predictions suggests a path across southern Tasmania and Adelaide.


UPDATE: 17 August 1999

This prediction update has been computed by Jan Manek based on astrometry from USNO/Flagstaff and Table Mountain Observatory. The Tycho position of the star has been used.

Summary:

The updated track is entirely co-incident with the nominal path, the track crossing western Tasmania, and Adelaide, South Australia.

Event time is about 20 seconds later than the Goffin and OCCULT predictions. Updated time is about 10h 46.2m for Adelaide.

As the path runs over the Adelaide area, there is every possibility of extensive coverage of this event. Medium to large telescopes will probably be needed as the star is faint.

The path also crosses Tasmania with Hobart just outside the eastern edge. A shift of only one path width to the east would place Hobart and Launceston directly in the path, along with Port Augusta, SA. Geelong in Victoria would also lie close to the edge of the path.

Observers with mobile telescopes are strongly encouraged to expand the region of coverage around Adelaide, within the Yorke Peninsula and (if possible) on Kangaroo Island. Observations are also strongly encouraged from the region of Mt Gambier, and from regions of western Victoria.

THE EVENT AT ONE GLIMPSE:

The Occultation Path: Data for the target star: Data for the minor planet: Data for the event:

Artemis Update

IMPORTANT NOTE!

Astrometric updates such as these should not be taken as definitive, but rather only as an indication of where the true track may lie relative to the original predicted track. Observers must bear in mind that later astrometry, in which the target star is measured in the same field as the asteroid, may still reveal substantial changes to the predicted track and time of the event. For this reason it is most important that observers far from the predicted track still monitor the event.

Use these links for further information:
[Planetary Occultations] [Using the Predictions]
[Observing Details] [Timing Details] [Reporting Details] [Report Form]
[Asteroid Occultation Results]


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